Exploració per autor "Teodorescu, Remus"
Ara es mostren els items 20-39 de 67
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Converter structure-based power loss and static thermal modeling of the press-pack IGBT three-level ANPC VSC applied to multi-MW wind turbines
Senturk, Osman S.; Helle, Lars; Munk-Nielsen, Stig; Rodríguez Cortés, Pedro; Teodorescu, Remus (2011-09-19)
Article
Accés restringit per política de l'editorialWind turbine converters demand high power density due to nacelle space limitation and high reliability due to high maintenance cost. Depending on the converter structure, the converter thermal performance determines the ... -
Converter structure-based power loss and static thermal modeling of the press-pack IGBT-based three-level ANPC and HB VSCs applied to Multi-MW wind turbines
Senturk, Osman S.; Helle, L; Munk-Nielsen, Stig; Rodríguez Cortés, Pedro; Teodorescu, Remus (2010)
Text en actes de congrés
Accés obertIn this study, the converter-structure based power loss and thermal models are developed for the medium voltage full-scale 3LANPC- VSC and 3L-HB-VSC utilizing press-pack IGBT-diode pairs and interfacing a 6MW wind ... -
Current control method for distributed generation power generation plants under grid fault conditions
Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Hermoso Costa, Juan Ramón; Etxeberria Otadui, Ion; Teodorescu, Remus; Blaabjerg, Frede (IEEE Computer Society Publications, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialThe operation of distributed power generation systems under grid fault conditions is a key issue for the massive integration of renewable energy systems. Several studies have been conducted to improve the response of ... -
DC-link voltage oscilations reduction during unbalanced grid faults for high power wind turbines
Miranda, Hernan; Teodorescu, Remus; Rodríguez Cortés, Pedro; Helle, L. (2011)
Text en actes de congrés
Accés restringit per política de l'editorialDuring unbalanced grid voltage faults the Power injected to the grid experiences 100Hz oscillations as a result of interactions between positive and negative sequence components of three-phase voltages and currents. These ... -
Decoupled double synchronous reference frame current controller for unbalanced grid voltage conditions
Reyes, Manuel; Rodríguez Cortés, Pedro; Vazques, Sergio; Luna Alloza, Álvaro; Carrasco, Juan Manuel; Teodorescu, Remus (2012)
Text en actes de congrés
Accés restringit per política de l'editorialDue to the growing changes in the electrical network related to the new distributed generation scheme and the integration of renewable energy sources, new requirements for grid-connected power converters are being defined ... -
Design and analysis of a slope voltage control for a DFIG wind power plant
Martinez, J.; Kjaer, P. C.; Rodríguez Cortés, Pedro; Teodorescu, Remus (2012-03)
Article
Accés restringit per política de l'editorialThis paper addresses a detailed design of a wind power plant and turbine slope voltage control in the presence of communication delays for a wide short-circuit ratio range operation. The implemented voltage control ... -
Design and coordination of a capacitor and on-load tap changer system for voltage control in a wind power plant of doubly fed induction generator wind turbines
Martinez, J.; Rodríguez Cortés, Pedro; Kjaer, P. C.; Teodorescu, Remus (2011-05-26)
Article
Accés restringit per política de l'editorialIn this paper, a novel coordination and control strategy for capacitor banks and on-load tap changer for a wind power plant is introduced. The capacitor banks are controlled in such way that the steady-state usage of the ... -
Deterministic and stochastic study of wind farm harmonic currents
Sainz Sapera, Luis; Mesas García, Juan José; Teodorescu, Remus; Rodríguez Cortés, Pedro (2010-06-03)
Article
Accés obertWind farm harmonic emissions are a well-known power quality problem, but little data based on actual wind farm measurements are available in literature. In this paper, harmonic emissions of an 18MWwind farm are investigated ... -
Electro-thermal modeling for junction temperature cycling-based lifetime prediction of a press-pack IGBT 3L-NPC-VSC applied to large wind turbines
Senturk, Osman S.; Munk-Nielsen, Stig; Teodorescu, Remus; Helle, L.; Rodríguez Cortés, Pedro (IEEE, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialReliability is a critical criterion for multi-MW wind turbines, which are being employed with increasing numbers in wind power plants, since they operate under harsh conditions and have high maintenance cost due to their ... -
Enhanced control strategy for MMC-based STATCOM for unbalanced load compensation
Nieves, M.; Maza, J.M.; Mauricio, J.M.; Teodorescu, Remus; Bongiorno, M.; Rodríguez Cortés, Pedro (2014)
Text en actes de congrés
Accés restringit per política de l'editorialModular Multilevel Converters (MMC) technology is today one of the preferred technology in HVDC and large STATCOM applications due to modularity, fault tolerance and high efficiency, but the voltage balancing becomes very ... -
Enhanced decoupled double synchronous reference frame current controller for unbalanced grid-voltage conditions
Reyes, M.; Rodríguez Cortés, Pedro; Vazquez, S.; Luna Alloza, Álvaro; Teodorescu, Remus; Carrasco, J.M. (2012)
Article
Accés restringit per política de l'editorialIn the last few years, restrictive grid codes have arisen to ensure the performance and stability of electrical networks, which experience amassive integration of renewable energy sources and distributed generation systems ... -
Enhanced local grid voltage support method for high penetration of distributed generators
Demirok, Erhan; Sera, Dezso; Rodríguez Cortés, Pedro; Teodorescu, Remus (IEEE Computer Society Publications, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialGrid voltage rise and thermal loading of network components are the most remarkable barriers to allow high number of distributed generator (DG) connections on the medium voltage (MV) and low voltage (LV) electricity ... -
Evaluation of the voltage support strategies for the low voltage grid connected PV generators
Demirok, Erhan; Sera, Dezso; Teodorescu, Remus; Rodríguez Cortés, Pedro; Borup, U (2010)
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Accés obertAdmissible range of grid voltage is one of the strictest constraints for the penetration of distributed photovoltaic (PV) generators especially connection to low voltage (LV) public networks. Voltage limits are usually ... -
FACTS Devices for large wind power plants
Adamczyk, A.; Teodorescu, Remus; Mukerjee, R. N.; Rodríguez Cortés, Pedro (2010)
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Accés restringit per política de l'editorialGrowing number of wind turbines is changing electricity generation profile all over the world. However, high wind energy penetration affects power system safety and stability. For this reason transmission system operators ... -
Four-branch star neutral current hybrid power filter and var compensator
Rodríguez Cortés, Pedro; Candela García, José Ignacio; Luna Alloza, Álvaro; Teodorescu, Remus; Blaabjerg, F.; Rocabert Delgado, Joan (2010)
Text en actes de congrés
Accés obertThis paper presents a solution for filtering current harmonics in three-phase four-wire networks based on the usage of a four-branch star (FBS) filter topology. The specific layout of single-phase inductors and capacitors ... -
Grid filter design for a multi-megawatt medium-voltage voltage source inverter
Rockhill, A.A.; Liserre, M.; Teodorescu, Remus; Rodríguez Cortés, Pedro (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-10-14)
Article
Accés obertThis paper describes the design procedure and performance of an LCL grid filter for a medium-voltage neutral point clamped (NPC) converter to be adopted for a multimegawatt wind turbine. The unique filter design challenges ... -
Grid synchronization for advanced power processing and FACTS in wind power systems
Luna Alloza, Álvaro; Rocabert Delgado, Joan; Vázquez Guzmán, Gerardo; Rodríguez Cortés, Pedro; Teodorescu, Remus; Córcoles López, Felipe (2010)
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Accés obertThe high penetration of wind power systems in the electrical network has introduced new issues in the stability and transient operation of the grid. By means of providing advanced functionalities to the existing power ... -
Grid voltage synchronization for distributed generation systems under grid fault conditions
Luna Alloza, Álvaro; Rocabert Delgado, Joan; Candela García, José Ignacio; Hermoso Costa, Juan Ramón; Teodorescu, Remus; Blaabjerg, Frede; Rodríguez Cortés, Pedro (2015-07-01)
Article
Accés obertThe actual grid code requirements for the grid connection of distributed generation systems, mainly wind and photovoltaic (PV) systems, are becoming very demanding. The transmission system operators (TSOs) are especially ... -
Guest Editorial
Teodorescu, Remus; Sauter, Thilo; Rodríguez Cortés, Pedro; Rodriguez, José; Palensky, Peter; Nasiri, Adel; Kupzog, Friederich; Liserre, M.; Balcells Sendra, Josep; Basso, Thomas; Bialasiewicz, Jan T.; Cecati, Carlo; Chakraborty, Sudipta; Guerrero Zapata, Josep Maria; Kazerani, Mehrdad (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
Article
Accés obert -
Lifetime investigations of a lithium iron phosphate (LFP) battery system connected to a wind turbine for forecast improvement and output power gradient reduction
Swierczynski, M.; Teodorescu, Remus; Rodríguez Cortés, Pedro (2011)
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Accés obertLithium Ion batteries and especially Lithium Iron Phosphate (LFP) batteries can be characterized by high power densities, relatively long life-time, no maintenance and a lot of research currently being done on increasing ...